Oracle: What drives deliverability?


What are the factors of deliverability? There are multiple variables in the equation. Infrastructure, volume, content, spam complaints, IP reputation, engagement, domain reputation, bounces, and spam traps all play a role, but which ones actually move the needle the most, now, in 2025?

Daniel Deneweth, Heather Goff, and Chad S. White explore exactly that in this updated blog post from Oracle. Originally published in 2020, it now includes current data and trends. TL;DR? Domain reputation is now one of the most important signals, and spam complaints seem to have regained significance as Gmail and Yahoo enforce stricter requirements.

And what of older, more historically important metrics like content filters and open rates? With changes like Apple’s Mail Privacy Protection and more advanced filtering systems, how much does engagement still matter in that inbox equation? Read the post to learn more.

And on top of their good thoughts, Civic Shout's Josh Nelson adds a solid perspective in his LinkedIn commentary. He zeroes in on complaint rates and explains why keeping complaint rates low is so important nowadays. 

Both pieces are worth reading if you care about staying in the inbox and out of trouble.

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